Valve



(No Model.)

R. D. WATSON. VALVE.

.No. 593,258. Patented Nov. 9, 1897.

V/ l 3 [/lil/ll FIG. 2.

a' %M i FIG.3.

INVENTOH me Naas wzru: co. naman-wo.. WASMINOTOIL 5. 1;

UNITED STATES ATET rrron RICHARD D. VVATSON, OF TOLEDO, OHIOfi SPECIFICATION forming part of Letters Patents No. 593,258, dated November 9, 1897.

4 Application filed May 3 1897. Serial No. 634369. (Ne model.)

To all whom it 'ma ,y conccrm Be it known that I, RICHARD DAVID WAT- sON, a citizen of the United States, residin g at Toledo, County of Lucas, State of Ohio, have invented a new and useful Valve, of which the following is a specification.

Myinvention relates to that class of valves wherein the action required is that when the pisten or plunger of the engine or pump in which it is being used is approaching it it shall be open and that when the piston'br plunger is receding from it it shall be closed. I attain this reverse of the usual action of Valves by the mechanism shown in the accompanying drawings, in which- Figure 1 is a longitudinal section showing valve open. Fig. 2 is a longitudinal section showing valve closed. Fig. 3 is a sectional drawing of the valve-seat and stufiing-box and parallel View of the valve. Fig. l is a View of inward end of Valve.

Similar letters rcf er to similar parts throughout the several drawings.

I will now endeavor to explain the working of the Valve.

The pisten or plnnger of the engine or punp inwhich my valve is being used is at the extreme inward stroke, as in Fig. l, and the valve open. A motive force, as steam, air, or gas, being admitted into the oylinder on the side opposite the Valve B, the piston or plunger is forced toward the Valve, the rod D sliding through the stuffing-box therein until the nut (Fon the rod D contacts with the head of the valve, and the remaining portion of the motion of the piston, continuing to the extreme ontward stroke, pushes the valve outward and closes the valve, at which moment the motive force is exhausted from the side of the piston on which it has just operated and is transferred, through the passage-way, to the side toward the valve and forces the pisten or plunger in the opposite direction the rod D sliding through the standing-box in the valve until the nut on its outer end contacts With said stufiing-box, and the remaining portion of the motion of the pisten or plunger, continuing to the extreme inward stroke, opens the valve, and the motive force, as steam, gas, air, or water, is exhausted from the cylinder, at which moment motive force is again admitted, as before, and the operation is repeated, and so on.

It is plain to be seen that when the length of the slidin g rod D is adjusted to correspond With the stroke of piston or plunger the action of the valve must be in perfect time therewith, thus assuring perfect results as for the object sought, which is that the Valre be open while the pisten or plunger is approaching or moving toward it and that the valve be closed while the piston or plunger is receding or noving from it.

W hat I claim as my invention, and desire to secure by Letters Patent, is-

The conbination in an engine or pnmp having a cylinder, or shell, and head having a seat and stuffing-bcx therein containing a valve B having a stuffing-box through which operates a sliding rod D having means at both its ends for adjustment to operate 'in combination with the pisten, or plunger, substantially as set forth.

R. D. WATSON.

witnesses:

CHAELES R. CLAPP, M. B. MOCARTHY. 

